Re: Time Dilation Can Only be Detected at Velocities Close to the Speed of Light

ProkaryoticCaspaseHomolog <tomyee3@gmail.com> wrote:

On Sun, 17 Nov 2024 19:03:25 +0000, J. J. Lodder wrote:
 

Mikko <mikko.levanto@iki.fi> wrote:
>

On 2024-11-15 21:52:05 +0000, LaurenceClarkCrossen said:
>

Time Dilation Can Only be Detected at Velocities Close to the Speed of
Light

>
Is one tenth of c close? At that speed time dilation is easy to observe.
>
Time dilation is observed at the speed of an aeroplane.
>
Oscillators currently studied in laboratories will in near future permit
the detection of time dilation at walking speed.

>
Amost  there:
0.3 meter of altitude is equivalent to about 9 km/h in speed.
More than walking, but already less than running,

 
Clock with 8?10^?19 Systematic Uncertainty
Alexander Aeppli, Kyungtae Kim, William Warfield, Marianna S.
Safronova, and Jun Ye
Phys. Rev. Lett. 133, 023401 – Published 10 July 2024
https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.133.023401
 
For a semi-popular account:
Reducing Uncertainty in an Optical Lattice Clock
Han-Ning Dai and Yu-Ao Chen
July 29, 2024• Physics 17, 118
https://physics.aps.org/articles/v17/118

Yes, but 30 cm altitude difference
is what has been demonstrated already.
Again, c^2 = 9x10^16,
so a clock stability of 10^18 corresponds to an altitude resolution
of about 1 cm, [1]

Jan

[1] See that Wikipedia article on chronometric leveling
(aka relativistic geodesy) that needs to be written.